Ruentex Development Co (TPE:9945) Cyclically Adjusted Book per Share: NT$30.10 (As of Dec. 2025)

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TPE:9945 Ruentex Development Co Ltd TPE:9945
74 GF Score
Price NT$25.85
GF Value NT$53.56
Valuation Possible Value Trap
! 4 Warning Signs
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What is Ruentex Development Co Cyclically Adjusted Book per Share?

Ruentex Development Co TPE:9945 +1.77% 74 Cyclically Adjusted Book per Share is NT$30.10 as of Dec. 2025. GuruFocus rates TPE:9945 with a GF Score™ of 74/100 and a GF Value™ of NT$53.56 (Possible Value Trap). The stock has 4 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Ruentex Development Co's adjusted book value per share for the three months ended in Dec. 2025 was NT$35.733. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is NT$30.10 for the trailing ten years ended in Dec. 2025.

During the past 12 months, Ruentex Development Co's average Cyclically Adjusted Book Growth Rate was 10.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 9.40% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 11.30% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Ruentex Development Co was 19.50% per year. The lowest was 9.00% per year. And the median was 14.30% per year.

As of today (2026-07-15), Ruentex Development Co's current stock price is NT$25.85. Ruentex Development Co's Cyclically Adjusted Book per Share for the quarter that ended in Dec. 2025 was NT$30.10. Ruentex Development Co's Cyclically Adjusted PB Ratio of today is 0.86.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ruentex Development Co was 2.71. The lowest was 0.75. And the median was 1.42.


Ruentex Development Co  (TPE:9945) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Ruentex Development Co's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=25.85/30.10
=0.86

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Ruentex Development Co was 2.71. The lowest was 0.75. And the median was 1.42.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Ruentex Development Co Cyclically Adjusted Book per Share Related Terms


Ruentex Development Co Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Ruentex Development Co's Cyclically Adjusted Book per Share can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Ruentex Development Co Cyclically Adjusted Book per Share Chart

Ruentex Development Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 21.11 22.97 25.17 27.33 30.10

Ruentex Development Co Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 27.33 28.17 28.86 29.62 30.10

TPE:9945 vs PWR, FIX, EME: Cyclically Adjusted Book per Share Comparison

For the Engineering & Construction subindustry, Ruentex Development Co's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Ruentex Development Co Cyclically Adjusted PB Ratio vs Construction Industry

For the Construction industry and Industrials sector, Ruentex Development Co's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Ruentex Development Co's Cyclically Adjusted PB Ratio falls into.


TPE:9945
74GF Score
Ruentex Development Co Ltd TPE:9945
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ruentex Development Co Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Ruentex Development Co's adjusted Book Value per Share data for the three months ended in Dec. 2025 was:

Adj_Book= Book Value per Share /CPI of Dec. 2025 (Change)*Current CPI (Dec. 2025)
=35.733/324.0540*324.0540
=35.733

Current CPI (Dec. 2025) = 324.0540.

Ruentex Development Co Quarterly Data

Book Value per Share CPI Adj_Book
201603 11.504 238.132 15.655
201606 11.673 241.018 15.695
201609 12.306 241.428 16.518
201612 11.416 241.432 15.323
201703 11.798 243.801 15.682
201706 13.287 244.955 17.578
201709 14.864 246.819 19.515
201712 17.102 246.524 22.480
201803 20.303 249.554 26.364
201806 19.633 251.989 25.248
201809 15.911 252.439 20.425
201812 10.900 251.233 14.059
201903 19.639 254.202 25.036
201906 24.285 256.143 30.724
201909 29.024 256.759 36.631
201912 28.539 256.974 35.989
202003 21.736 258.115 27.289
202006 31.933 257.797 40.140
202009 33.888 260.280 42.191
202012 47.054 260.474 58.540
202103 33.177 264.877 40.589
202106 38.106 271.696 45.449
202109 37.423 274.310 44.209
202112 48.300 278.802 56.140
202203 25.151 287.504 28.348
202206 9.910 296.311 10.838
202209 7.416 296.808 8.097
202212 27.800 296.797 30.353
202303 30.373 301.836 32.609
202306 32.463 305.109 34.479
202309 29.999 307.789 31.584
202312 33.320 306.746 35.200
202403 36.375 312.332 37.740
202406 36.532 314.175 37.681
202409 37.296 315.301 38.331
202412 35.745 315.605 36.702
202503 34.299 319.799 34.755
202506 29.554 322.561 29.691
202509 34.374 324.800 34.295
202512 35.733 324.054 35.733

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of NT$30.10 mean?
Ruentex Development Co (TPE:9945) has a Cyclically Adjusted Book per Share of NT$30.10 as of Dec. 2025. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Ruentex Development Co and its competitors.
Is Ruentex Development Co's Cyclically Adjusted Book per Share too high?
Ruentex Development Co's current Cyclically Adjusted Book per Share is NT$30.10. Overall, Ruentex Development Co has a GF Score™ of 74/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Ruentex Development Co's Cyclically Adjusted Book per Share compare to PWR and FIX?
Ruentex Development Co's Cyclically Adjusted Book per Share of NT$30.10 can be compared against companies in the Construction industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Construction company?
A good Cyclically Adjusted Book per Share depends on the Construction industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Ruentex Development Co and its competitors. Ruentex Development Co's current Cyclically Adjusted Book per Share is NT$30.10. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ruentex Development Co stock overvalued right now?
Based on GuruFocus' analysis, Ruentex Development Co (TPE:9945) is currently considered Possible Value Trap. The stock's GF Value™ is NT$53.56, compared to a current price of NT$25.85 — trading 51.7% below its estimated fair value. The current Cyclically Adjusted Book per Share is NT$30.10. Ruentex Development Co's overall GF Score™ is 74/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Ruentex Development Co (TPE:9945), the current Cyclically Adjusted Book per Share is NT$30.10 as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Ruentex Development Co (TPE:9945) Overvalued in 2026?

Based on GuruFocus' analysis, Ruentex Development Co stock appears to be undervalued. The current stock price of NT$25.85 is trading 51.7% below its estimated GF Value™ of NT$53.56. GuruFocus considers Ruentex Development Co to be Possible Value Trap.

Key valuation signals for TPE:9945:

  • Cyclically Adjusted Book per Share: NT$30.10
  • GF Value™: NT$53.56 vs. price of NT$25.85 (51.7% below fair value)
  • GF Score™: 74/100 with 4 warning signs

No single metric tells the full story. See the TPE:9945 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ruentex Development Co Business Description

Address No. 308, Bade Road, 11th floor-1st floor, Section 2, Zhongshan District, Taipei, TWN, 104
Ruentex Development Co Ltd is a Taiwan-based company involved in the construction business. The company's reportable segments include Construction Business Department, Commercial Real Estate, Building Materials, and Other operating Departments. It generates maximum revenue from the Construction segment. Geographically, it derives a majority of its revenue from Taiwan.
74GF Score

Get the complete analysis for TPE:9945

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

NT$25.85
Price
NT$53.56
GF Value